Subtract 50/56 from 15/30
15/30 - 50/56 is -11/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
15/30 = 15 × 28/30 × 28 = 420/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
50/56 = 50 × 15/56 × 15 = 750/840 - Subtract the two like fractions:
420/840 - 750/840 = 420 - 750/840 = -330/840 - After reducing the fraction, the answer is -11/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/60-50/56 45/30-50/56 15/90-50/56 75/30-50/56